相关实验视频

Updated: May 5, 2026

Movement Retraining using Real-time Feedback of Performance

Movement Retraining using Real-time Feedback of Performance

Published on: January 17, 2013

仪器指针的静态精度用于CAST类运动分析测量中的解剖标志校准

Kristóf Rácz¹, Beáta Seregély², Rita M Kiss³

¹Department of Mechatronics, Optics and Mechanical Engineering Informatics, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111, Budapest, Hungary.

Annals of biomedical engineering

|May 9, 2025

概括

在运动分析中使用的仪器指针显示最小的精度误差 (0.2毫米变化). 优化指针几何学对准确性几乎没有影响,但与系统极限相近的指针可以使变化率翻倍.

科学领域:

生物力学生物力学
运动分析运动分析
人类运动科学科学人类运动科学

背景情况:

校准解剖系统技术 (CAST) 对于运动分析至关重要.
不一致的地标校准导致联合角度计算中的错误.
内部和内部检查员准确度的差异是很重要的问题.

研究的目的:

在运动分析中描述和最小化导致异常地标校准的因素.
检查和优化用于地标校准的仪器指针的性能.
为了解决仪器指针精度缺乏完整的表征.

主要方法:

调查了四个不同的仪器指针与光学OptiTrack运动捕捉系统.
在捕获体积内的三个不同的位置测量了指针尖位置的变化.
在每个位置的不同方向上评估指针精度.

主要成果:

静止标记器显示<0.06毫米的变化 (95%的置信度).
静止指针尖的变化大约为0.2毫米.
如果标记器太接近系统分辨率,变化可能会翻一番;指针几何形状的影响最小.

结论:

由于技术进步,运动捕捉系统的静态精度非常好.
提高追踪稳定性可能对整体指针精度的影响最小.
目前的仪器指针精度足以用于大多数运动分析应用.

关键词:

解剖学里程碑是一个解剖学里程碑.校准的解剖系统技术技术.有仪器的指针指针.运动分析运动分析.精确度精确度精确度精确度

更多相关视频

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

相关概念视频

Uncertainty in Measurement: Accuracy and Precision

Uncertainty in Measurement: Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.

Accuracy and Precision

Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. Highly accurate...